Home / 8,255.16-11,387.34-5,109.12

Finding the Fourth Proportional to 8,255.16, 11,387.34 and 5,109.12

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Solution

The fourth proportional to 8,255.16, 11,387.34 and 5,109.12 is: 7,047.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,255.16 : 11,387.34 = 5,109.12 : x
  2. Step 2: Convert to fraction form
    8,255.16/11,387.34 = 5,109.12/x
  3. Step 3: Cross multiply
    8,255.16x = 11,387.34 × 5,109.12
  4. Step 4: Simplify right side
    8,255.16x = 58,179,286.54
  5. Step 5: Solve for x
    x = 58,179,286.54/8,255.16
  6. Step 6: Final answer
    x = 7,047.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.